890831772 has 18 divisors (see below), whose sum is σ = 2251824848. Its totient is φ = 296943912.

The previous prime is 890831743. The next prime is 890831783. The reversal of 890831772 is 277138098.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12372628 + ... + 12372699.

Almost surely, 2^890831772 is an apocalyptic number.

It is an amenable number.

890831772 is an abundant number, since it is smaller than the sum of its proper divisors (1360993076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

890831772 is a wasteful number, since it uses less digits than its factorization.

890831772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24745337 (or 24745332 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 890831772 is about 29846.8050551479. The cubic root of 890831772 is about 962.1997343468.

The spelling of 890831772 in words is "eight hundred ninety million, eight hundred thirty-one thousand, seven hundred seventy-two".